Ionic Liquid-Based Surfactant Extraction Coupled with Magnetic Dispersive μ-Solid Phase Extraction for the Determination of Phthalate Esters in Packaging Milk Samples by HPLC

被引:15
作者
Wang, Meng [1 ]
Yang, Fan [1 ]
Liu, Le [2 ]
Cheng, Chunsheng [3 ]
Yang, Yaling [1 ]
机构
[1] Kunming Univ Sci & Technol, Fac Life Sci & Technol, Kunming 650500, Peoples R China
[2] Yunnan Salt & Salt Chem Co Ltd, Kunming 650200, Peoples R China
[3] Kunming Univ Sci & Technol, Yunnan Prov Food Safety Res Inst, Kunming 650500, Peoples R China
基金
中国国家自然科学基金;
关键词
High-performance liquid chromatography; Ionic liquid-based surfactant extraction; Magnetic dispersive mu-solid phase extraction; Milk samples; Phthalate acid esters; MICROWAVE-ASSISTED EXTRACTION; ENVIRONMENTAL WATER SAMPLES; GAS-CHROMATOGRAPHY; MICROEXTRACTION; GRAPHENE; PRECONCENTRATION; NANOPARTICLES; FABRICATION; SEPARATION; ADSORBENT;
D O I
10.1007/s12161-016-0729-6
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
A highly selective sample cleanup procedure combining ionic liquid-based surfactant extraction (ILSE) and magnetic dispersive mu-solid phase extraction (MD-mu-SPE) was triumphantly developed for the synchronously extraction of four phthalate acid esters (PAEs) in packaging milk samples prior to high-performance liquid chromatography coupled with photodiode array detector (HPLC-DAD). In this ionic liquid (IL)-based surfactant method, 1-octyl-3-methylimidazolium hexafluorophosphate ([C8MIM] [PF6]) was used as extraction solvent, anionic surfactant sodium linear alkylbenzene sulfonate (LAS) was used as auxiliary extraction solvent, and then sodium chloride (NaCl) was mixed to drive phase separation. The synthesized hydrophobic diatomaceous earth-supported Fe3O4 magnetic nanoparticles (DSMNPs) were applied as an efficient adsorbent to retrieve the analyte-containing IL and LAS. Under the optimal extraction situations, good linearity of the approach was obtained in the concentration range from 10 to 1000 ng/mL for target analytes, and the preconcentration process was rapidly accomplished in 5 min. The limits of detection (LODs) based on a signal-to-noise ratio (S/N = 3) were ranged from 1.42 to 3.57 ng/mL with the relative standard deviations (RSDs) over the range of 1.84-3.56% (n = 5). The above-mentioned method was applied to the trace analysis of four PAEs including benzyl butyl phthalate (BBP), dicyclohexyl phthalate (DCHP), di-n-butyl phthalate (DBP), and di-n-octyl phthalate (DNOP) in packaging milk samples, and recoveries were between 89.8 and 99.7%.
引用
收藏
页码:1745 / 1754
页数:10
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